YM 2210D front left knuckle

[winston1]

284, I may be wrong, but looking at my ym220 manual shims 40 and 41 are used for setting backlash on the ring gear in the differential housing. They shouldn't have any effect on the drive shaft movement. The ring gear actually goes inside bearing #10 and the drive shaft floats through there. It is retained on the outer end in the top cap.

 

[284 International]

Looking at the diagrams more closely, and on a bigger screen, I believe you are right, Winston.

The axle shaft bearing on the wheel end appears to ride in the top hat, not the axle housing. The bearing seems to be what locates the gear when shimmed, via the two clips. The top hat bolts directly to the axle tube and is non-variable in its position relative to the axle tube.

It seems that the only choices for improper backlash in these gears would be bearing 43, and thus gear 36, going too far into the top hat and binding on gear 52, or bearing 58 being located such that gear 52 is too high. Is bearing 58 in the top hat or the knuckle?

Are you sure you have bearing 58 in the correct spot, and bearing 43 in its proper location? Maybe they are similar enough to fit, but not function properly.

The only other option is the tightness and binding is somewhere other than the top hat itself.

 

[winston1]

Yes, bearing 58 goes in the top hat. It goes on the spindle bevel gear similiar to the differential ring gear and bearing. Snap ring 28-42 is what holds the spindle shaft and gear from going down.

I think there is some small difference in the machining of the old and new tophats.

Have you tried leaving off snap ring 28-42 allowing bearing 58 to drop a few thousands. Then install axle, bearing, etc. and see if it will mate without binding.

 

[tomture]

Winston, Yes I have tried that and it works. However, I have to pull back bearing #58 4-5 mm. The bearing then covers the entire grove for the snap ring.

Besides, That change would then have an effect on how gear #53 goes together with gear #1. Those two gears would then be out of tolerance with respect to each other.I scrapped the Idea of leaving it.

At this point I am really out of Ideas on how to make it work,.. The fact that I can make it work using an old top cap without any problems is probably key.

Thanks very much for helping me double check my work. I am sending the caps back and will wait to see what Hoye says.

Tom

 

[284 International]

Since you have an old top hat that is known to work, and the new ones to compare, can you measure the relevant distances and compare them, to verify they are off the 4 to 5 mm required to make the gears mesh?

 

[winston1]

Yes I agree you can't make it work that way. Just trying to determine what is off to cause this problem. 284 has a good idea of comparison if you haven't already shipped the new ones back.